the evidence is in the link, and i came to believe that you cannot prove that a hell in the afterlife even exists right now by another way, through trying to establish it with the Book, and reading arguments by theologians. God is the all consuming fire, is He not? Now, you can believe what you like, but you can also question what you were given, God is not going to zap you for trying to learn, so i grabbed the first NT ref for hell,
http://biblehub.com/lexicon/matthew/23-33.htm, because there aren't any OT of course, and i invite you to dive right in, there in the Lexicon, and see for yourself.
Or there are several other spots NT, where Gehenna has been translated "hell,"
http://biblehub.net/search.php?q=hell, you are welcome to pick one and show me, ok.
But i doubt you will be able to even accept the challenge, as this is the opposite of being defensive--and thus rude and degrading--and you would first have to entertain that you maybe do not know. Gauging by your current behavior, i'm guessing that you're still about ten years away from this study; but i have been wrong before. Best of luck to you.